Hot Electronics How-Tos

How To: Build a Small DIY Hydrogen Fuel Cell Science Experiment

The hydrogen fuel cell has great potential to replace carbon-based fuels in our vehicle fleets and stave off global warming. It's a difficult concept intellectually, so why not make this fun little science experiment to try it out for yourself? Yes, by following these simple instructions you can make a small hydrogen fuel cell at home that will even power some devices!

How To: Calculate compound interest using a TI-84 and solver

This is a video tutorial in the Electronics category where you are going to learn how to calculate compound interest using a TI-84 and solver. Press the apps button on the calculator and press enter to load the TVM Solver which is the 1st choice. Here the meaning of various notations are N is time, I% is the percentage, PV is present value, PMT is payment, FV is future value and C/Y is compounding period. The problem is find the compound amount and the interest earned on $12,903.45 compounded...

How To: Make a DIY video remote for Canon DSLR cameras for under 10 bucks

If you have a Canon digital camera and plan on shooting video with it using a camera rig, then you'll want a good way to control your recordings with a start/stop button. A remote control is the way to go, but don't spend all that money— make your own! The remote in the video is hardwire into the camera and onto the rig for easy handling. You'll need your Canon 5D MK II HD DSLR (but it will work on other Canon models, too), a Canon RC-6 Remote Control (or generic brand), fiber optics cable, w...